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1. 发明授权

US5983388A Forward error correction arrangement (FEC) for multipoint to single point communication systems 失效
标题翻译：用于多点到单点通信系统的前向纠错装置（FEC）
公开(公告)号：US5983388A
公开(公告)日：1999-11-09
申请号：US917664
申请日：1997-08-25
申请人： Vladimir Friedman , Mark Russell , Stuart D. Sandberg , Peter N. Heller
发明人： Vladimir Friedman , Mark Russell , Stuart D. Sandberg , Peter N. Heller
IPC分类号： H03M13/00
CPC分类号： H03M13/2703 , H03M13/271 , H04L1/0043 , H04L1/0071 , H03M13/1515
摘要： A forward error correction (FEC) system and method for use in a multipoint-to-point frame based synchronized transmission communication system in which data from users are sent in selected portions of data frames having coded symbols added thereto by encoders associated with each user. The number of bits per user assigned portions of data frames is established as an integer number of FEC code symbols. The interleaving depth is set equal to a multiple of the total number of code symbols sent by a user in a data frame. The encoders are synchronized such that all of the encoders start processing associated interleaving frames at the same time. In exemplary embodiments, the communication systems include DWMT and TDM communication systems.
摘要翻译：一种在基于多点对点帧同步传输通信系统中使用的前向纠错（FEC）系统和方法，其中来自用户的数据在具有与每个用户相关联的编码器添加到其中的编码符号的数据帧的选定部分中被发送。每个用户分配的数据帧部分的比特数被建立为整数个FEC码元。将交织深度设置为等于用户在数据帧中发送的代码符号的总数的倍数。编码器被同步，使得所有编码器同时开始处理相关的交织帧。在示例性实施例中，通信系统包括DWMT和TDM通信系统。

2. 发明授权

US6088390A Integrating decision feedback equalization and forward error correction to improve performance in point-to-multipoint digital transmission 失效
标题翻译：集成判决反馈均衡和前向纠错，以提高点对多点数字传输的性能
公开(公告)号：US6088390A
公开(公告)日：2000-07-11
申请号：US898166
申请日：1997-07-22
申请人： Mark Russell , Vladimir Friedman , Stuart D. Sandberg
发明人： Mark Russell , Vladimir Friedman , Stuart D. Sandberg
IPC分类号： H04L1/00 , H04L25/03 , H03H7/30 , H03H7/40
CPC分类号： H04L1/0071 , H04L25/03146 , H04L1/0057 , H04L2001/0093 , H04L2025/0349 , H04L2025/0377 , H04L2025/03796
摘要： A method and system which combines a properly designed FEC and the periodic transmission of known symbols to obtain a desired error performance in a point-to-multipoint digital transmission system employing a DFE which induces error propagation. A transmitter unit includes a forward error correction encoder (FEC) which implements a code to information provided to an input of a data interleaver having block length N and interleaving depth D, and a data modulator which is coupled to an output of the data interleaver to receive a stream of data symbols. At least one receiver unit includes a decision feedback equalizer (DFE) which includes a feedback filter and provides an input to a data deinterleaver having block length N and interleaving depth D, and a FEC decoder which receives data from an output of the data deinterleaver. Sequences of known symbols of length at least equal to the length of the feedback filter are periodically added to the output of the data interleaver. The receiver unit uses knowledge of the sequence to pass correct data to the feedback filter. The number of data symbols between the periodic sequences is made equal to an integer multiple k of the interleaving Depth D, thus limiting error propagation to cause no more than k errors per codeward of block length N. The FEC code serves to correct the k errors per error propagation event.
摘要翻译：一种组合适当设计的FEC和已知符号的周期性传输的方法和系统，以在采用引起误差传播的DFE的点对多点数字传输系统中获得期望的误差性能。发射机单元包括前向纠错编码器（FEC），其向提供给具有块长度N和交织深度D的数据交织器的输入的信号实现代码，以及数据调制器，其耦合到数据交织器的输出到接收数据符号流。至少一个接收器单元包括判决反馈均衡器（DFE），其包括反馈滤波器并向具有块长度N和交织深度D的数据解交织器提供输入，以及从数据解交织器的输出接收数据的FEC解码器。至少等于反馈滤波器的长度的已知符号长度的序列被周期性地添加到数据交织器的输出。接收器单元使用序列的知识将正确的数据传送到反馈滤波器。使周期序列之间的数据符号数等于交织深度D的整数倍k，从而限制误差传播，从而造成块长度N的每个码字不超过k个错误。FEC码用于校正k个误差每个错误传播事件。

3. 发明申请

US20130050132A1 TECHNIQUES FOR CAPACITIVE TOUCH SCREEN CONTROL 审中-公开
标题翻译：电容触摸屏控制技术
公开(公告)号：US20130050132A1
公开(公告)日：2013-02-28
申请号：US13218788
申请日：2011-08-26
申请人： Javier Calpe Maravilla , Alberto Marinas , Santiago Iriarte , Enrique Company Bosch , Miguel Chanca , Reza Alavi , Vladimir Friedman , John Cleary
发明人： Javier Calpe Maravilla , Alberto Marinas , Santiago Iriarte , Enrique Company Bosch , Miguel Chanca , Reza Alavi , Vladimir Friedman , John Cleary
IPC分类号： G06F3/045
CPC分类号： G06F3/044 , G06F1/3262 , G06F3/0418
摘要： Techniques to control a capacitive touch screen that decrease processing time and increase noise rejection. The techniques may include injecting a plurality of excitation signals having unique spectral profiles onto conductors of the capacitive touch screen, sampling signals returned from the screen, and determining a location of touch. The techniques may further include injecting a plurality of excitation signals having unique spectral profiles onto adjacent or non-adjacent conductors of the capacitive touch screen. The techniques may further include injecting a plurality of excitation signals having unique spectral profiles onto conductors of the capacitive touch screen in unequal measures. The techniques may also include mapping frequency characteristics of noise present on the capacitive touch screen.
摘要翻译：用于控制电容式触摸屏的技术，其减少处理时间并增加噪声抑制。这些技术可以包括将具有独特光谱轮廓的多个激励信号注入到电容式触摸屏的导体上，从屏幕返回的采样信号以及确定触摸的位置。这些技术可以进一步包括将具有唯一光谱轮廓的多个激励信号注入到电容式触摸屏的相邻或非相邻导体上。这些技术可以进一步包括以不相等的措施将具有独特光谱分布的多个激励信号注入到电容式触摸屏的导体上。这些技术还可以包括映射存在于电容式触摸屏上的噪声的频率特性。

4. 发明授权

US5262714A Sinewave frequency measuring apparatus 失效
标题翻译：正弦波频率测量仪
公开(公告)号：US5262714A
公开(公告)日：1993-11-16
申请号：US33447
申请日：1993-03-18
申请人： Vladimir Friedman
发明人： Vladimir Friedman
IPC分类号： G01R23/02
CPC分类号： G01R23/02
摘要： This invention relates to sinewave frequency measuring apparatus and method and more particularly such apparatus including a frequency estimator triggered by a zero crossing of a sinewave and means for producing sample signals at a constant rate; and a method which provides and uses an approximation of the sinewave through the zero crossing, as a straight line between two sampling periods. Errors are eliminated by means of a low pass filter. The method performs a fractional cycle correction by adding or substracting the interpolation results from the raw period time counts.
摘要翻译：本发明涉及正弦波频率测量装置和方法，更具体地说，涉及包括由正弦波的过零点触发的频率估计器和以恒定速率产生采样信号的装置的装置。以及通过过零点提供和使用正弦波的近似作为两个采样周期之间的直线的方法。通过低通滤波器消除错误。该方法通过从原始时间计数中添加或减去插值结果来执行分数循环校正。

5. 发明授权

US08286067B2 Method for transmitting sampled data and control information between a DSP and an RF/analog front-end 有权
标题翻译：在DSP和RF /模拟前端之间传输采样数据和控制信息的方法
公开(公告)号：US08286067B2
公开(公告)日：2012-10-09
申请号：US12581740
申请日：2009-10-19
申请人： Vladimir Friedman , Reza Alavi , Raju Hormis , Leo Montreuil
发明人： Vladimir Friedman , Reza Alavi , Raju Hormis , Leo Montreuil
IPC分类号： G06F11/10
CPC分类号： H04L12/2838 , H03M13/093 , H04L1/0057 , H04L2012/2849
摘要： A method for delivering control information together with sampled data between a DSP and an RF/analog front-end in a high speed communication modem, which embeds sampled data and control information in frames to be transferred over one interface. A frame may comprise various fields, each may consist of one or more bytes or octets. The frame may have a data field for carrying the sampled data, and at least one control field for transferring the control information to update RF/analog front-end registers. The control field may include an octet containing a control address, an octet containing a control command, and an octet containing control data. The frame may also provide means of synchronization, e.g., by using a sync field to identify the frame boundary.
摘要翻译：一种用于在高速通信调制解调器中的DSP和RF /模拟前端之间传送控制信息以及采样数据的方法，该方法将采样数据和控制信息嵌入到要通过一个接口传送的帧中。帧可以包括各种字段，每个字段可以由一个或多个字节或八位字节组成。帧可以具有用于承载采样数据的数据字段，以及用于传送控制信息以更新RF /模拟前端寄存器的至少一个控制字段。控制字段可以包括包含控制地址的八位字节，包含控制命令的八位字节和包含控制数据的八位位组。该帧还可以提供同步的方式，例如通过使用同步字段来识别帧边界。

6. 发明申请

US20100199158A1 METHOD FOR TRANSMITTING SAMPLED DATA AND CONTROL INFORMATION BETWEEN A DSP AND AN RF/ANALOG FRONT-END 有权
标题翻译：用于发送DSP和RF /模拟前端之间的采样数据和控制信息的方法
公开(公告)号：US20100199158A1
公开(公告)日：2010-08-05
申请号：US12581740
申请日：2009-10-19
申请人： Vladimir Friedman , Reza Alavi , Raju Hormis , Leo Montreuil
发明人： Vladimir Friedman , Reza Alavi , Raju Hormis , Leo Montreuil
IPC分类号： H04B1/38 , H03M13/09 , G06F11/10
CPC分类号： H04L12/2838 , H03M13/093 , H04L1/0057 , H04L2012/2849
摘要： A method for delivering control information together with sampled data between a DSP and an RF/analog front-end in a high speed communication modem, which embeds sampled data and control information in frames to be transferred over one interface. A frame may comprise various fields, each may consist of one or more bytes or octets. The frame may have a data field for carrying the sampled data, and at least one control field for transferring the control information to update RF/analog front-end registers. The control field may include an octet containing a control address, an octet containing a control command, and an octet containing control data. The frame may also provide means of synchronization, e.g., by using a sync field to identify the frame boundary.
摘要翻译：一种用于在高速通信调制解调器中的DSP和RF /模拟前端之间传送控制信息以及采样数据的方法，该方法将采样数据和控制信息嵌入到要通过一个接口传送的帧中。帧可以包括各种字段，每个字段可以由一个或多个字节或八位字节组成。帧可以具有用于承载采样数据的数据字段，以及用于传送控制信息以更新RF /模拟前端寄存器的至少一个控制字段。控制字段可以包括包含控制地址的八位字节，包含控制命令的八位字节和包含控制数据的八位位组。该帧还可以提供同步的方式，例如通过使用同步字段来识别帧边界。

7. 发明授权

US07415542B2 Micro-programmable filter engine having plurality of filter elements interconnected in chain configuration wherein engine supports multiple filters from filter elements 有权
标题翻译：微型可编程过滤器发动机具有多个以链式配置互连的过滤元件，其中发动机支持来自过滤元件的多个过滤器
公开(公告)号：US07415542B2
公开(公告)日：2008-08-19
申请号：US10871509
申请日：2004-06-18
申请人： Michael Hennedy , Vladimir Friedman , Artemas Speziale , Mohammad Reza Sherkat
发明人： Michael Hennedy , Vladimir Friedman , Artemas Speziale , Mohammad Reza Sherkat
IPC分类号： G06F3/00 , G06F7/38 , G06F17/10
CPC分类号： H03H17/0294 , H03H17/0288
摘要： A micro-programmable filter (MFE) engine includes multiple programmable filter elements and a microcode controller. The filter elements can be configured, controlled, and combined in different ways to implement different types of filters. The MFE preferably supports multiple-execution instructions that allow a single instruction to perform multiple moves into accumulators for efficient data movement inside MFE.
摘要翻译：微型可编程滤波器（MFE）引擎包括多个可编程滤波器元件和微码控制器。过滤器元件可以以不同的方式进行配置，控制和组合，以实现不同类型的过滤器。 MFE优选地支持多执行指令，其允许单个指令执行多次移动到累加器中以在MFE内有效地进行数据移动。

8. 发明授权

US07663631B1 Pixel engine architecture 有权
标题翻译：像素引擎架构
公开(公告)号：US07663631B1
公开(公告)日：2010-02-16
申请号：US11363683
申请日：2006-02-28
申请人： Vladimir Friedman , Michael Hennedy
发明人： Vladimir Friedman , Michael Hennedy
IPC分类号： G06T15/00
CPC分类号： H04N9/045 , G06T1/20 , H04N5/3572
摘要： A single-instruction multiple-data processor comprises at least two multiply-accumulator units and associated coefficient memories and data memories. Coefficient memory addresses are formed from a base address and data samples stored in the data memories.
摘要翻译：单指令多数据处理器包括至少两个乘法累加器单元和相关联的系数存储器和数据存储器。系数存储器地址由存储在数据存储器中的基地址和数据样本形成。

9. 发明申请

US20050283509A1 Micro-programmable filter engine 有权
标题翻译：微型可编程滤波器引擎
公开(公告)号：US20050283509A1
公开(公告)日：2005-12-22
申请号：US10871509
申请日：2004-06-18
申请人： Michael Hennedy , Vladimir Friedman , Artemas Speziale , Mohammad Sherkat
发明人： Michael Hennedy , Vladimir Friedman , Artemas Speziale , Mohammad Sherkat
IPC分类号： G06F15/16 , H03H17/02
CPC分类号： H03H17/0294 , H03H17/0288
摘要： A micro-programmable filter (MFE) engine includes multiple programmable filter elements and a microcode controller. The filter elements can be configured, controlled, and combined in different ways to implement different types of filters. The MFE preferably supports multiple-execution instructions that allow a single instruction to perform multiple moves into accumulators for efficient data movement inside MFE.
摘要翻译：微型可编程滤波器（MFE）引擎包括多个可编程滤波器元件和微码控制器。过滤器元件可以以不同的方式进行配置，控制和组合，以实现不同类型的过滤器。 MFE优选地支持多执行指令，其允许单个指令执行多次移动到累加器中以在MFE内有效地进行数据移动。

10. 发明授权

US07072617B1 System and method for suppression of RFI interference 有权
标题翻译：用于抑制RFI干扰的系统和方法
公开(公告)号：US07072617B1
公开(公告)日：2006-07-04
申请号：US10850307
申请日：2004-05-19
申请人： Bindu Gupta , Faramarz Sabouri , Vladimir Friedman
发明人： Bindu Gupta , Faramarz Sabouri , Vladimir Friedman
IPC分类号： H04B1/10
CPC分类号： H04L25/085 , H03G3/3052 , H04L27/0002
摘要： A system and method for suppressing RFI receives a differential input signal Vd, and a signal Vcm which varies with the common mode component of Vd. Vcm is phase-shifted and then amplified with a programmable gain G1 to produce an output VA1. A subtractor produces an output Vsub which varies with Vd−VA1. Vsub is amplified with a programmable gain G2 to produce an output VA2. An analog input signal processing circuit receives VA2 at an input which has an associated maximum dynamic range. A processor adjusts G2 such that VA2 covers the maximum dynamic range, adjusts the phase shift and G1 to minimize VA2, and adjusts G2 to increase VA2 such that it again covers the maximum dynamic range. The RFI in Vd is substantially subtracted out, thereby enabling the full dynamic range of the analog input signal processing circuit to be employed in receiving Vd.
摘要翻译：用于抑制RFI的系统和方法接收差分输入信号V SUB，以及随着V D的共模分量而变化的信号V cc >。 VCI是相移的，然后用可编程增益G 1进行放大，以产生输出V A1。减法器产生随着V SUB-A1 A1变化的输出V SUB子。使用可编程增益G 2对V SUB子件进行放大，以产生输出V A2。模拟输入信号处理电路在具有相关最大动态范围的输入端接收V A2。处理器调整G 2使得V A2覆盖最大动态范围，调整相移和G 1使V A2最小化，并调整G 2以增加V _{A2 ，使其再次覆盖最大动态范围。基本上减去了V SUB中的RFI，从而使模拟输入信号处理电路的全动态范围能够用于接收V SUB。}

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